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    • 35. 发明公开
    • 고성능 감수효과를 가진 시멘트 혼화제 및 그의 제조방법과 이를 포함하는 시멘트 조성물
    • 具有高范围减水效果的水泥混合物及其制备方法
    • KR1020040001763A
    • 2004-01-07
    • KR1020020037083
    • 2002-06-28
    • 주식회사 엘지화학
    • 최병길강동규박광명송종근이찬영송희봉손지숙이창엽노동덕김대중
    • C04B26/06
    • C04B24/165C04B24/2647C04B24/2694C04B2103/408C08G65/2654C08L71/02C08L2205/05C08L2666/04
    • PURPOSE: Provided are high range water reducing admixtures comprising at least one of carbonic acid-based copolymers containing surfactant as a monomer and copolymer salts for improving dispersity of cement particles. Accordingly, the admixtures increase the fluidity of cement composition and offer good workability. CONSTITUTION: The admixtures, carbonic acid-based copolymers, contain the components of: (i) 50-90wt.% of alkoxy polyalkylene glycol mono(meth)acrylic acid ester monomer, such as methoxy polyethylene glycol mono(meth)acrylate, expressed by formula 1, wherein R1 is H or CH3, R2O is a mixture of one or more of C2-C4 oxyalkylene, R3 is C1-C4 alkyl and m is the average moles of oxyalkylene and is an integer of 1-50; (ii) 5-45wt.% of (meth)acrylic acid monomer or salt thereof such as metal(M+, M2+) salt of acrylic acid and meta acrylic acid; (iii) 0.5-40wt.% of reactive surfactant, such as sulfoxy polyethylene glycol aryl ether, expressed by formula 3, wherein R5 is H or CH3, R6 is C1-C3 alkylene, phenylene, or alkylphenylene, R7 is a mixture of one or more of C1-C4 oxyalkylene, r is the average moles of oxyalkylene and is an integer of 10-50 by, n is 0 or1, and M2 is H, M+, NH3 or NH2. The admixtures, salts of prepared copolymers, are obtained by neutralizing copolymers with alkali such as hydroxide and chloride of M+ or M2+, ammonia or amine at 0-120deg.C. The weight mean molecular weight of the above copolymers and copolymer salts is 10000-30000. The cement composition contains 0.01-10pts.wt. of cement admixtures, based on 100pts.wt. of cement.
    • 目的:提供包含至少一种含有作为单体的表面活性剂的碳酸基共聚物和用于改善水泥颗粒分散性的共聚物盐的高范围减水混合物。 因此,混合物增加了水泥组合物的流动性并提供了良好的可加工性。 构成:碳酸共聚物的混合物含有:(i)50-90重量%的烷氧基聚亚烷基二醇单(甲基)丙烯酸酯单体,如甲氧基聚乙二醇单(甲基)丙烯酸酯,由 式1其中R1是H或CH3,R2O是一个或多个C2-C4氧化烯的混合物,R3是C1-C4烷基,m是氧化烯的平均摩尔数,为1-50的整数; (ii)5-45重量%的(甲基)丙烯酸单体或其盐,例如丙烯酸和间丙烯酸的金属(M +,M2 +)盐; (iii)0.5-40重量%的由式3表示的反应性表面活性剂如磺氧基聚乙二醇芳基醚,其中R 5是H或CH 3,R 6是C 1 -C 3亚烷基,亚苯基或烷基亚苯基,R 7是一个 或更多的C1-C4氧化烯,r是氧化烯的平均摩尔数,为10-50的整数,n为0或1,M2为H,M +,NH 3或NH 2。 制备的共聚物的盐的混合物是通过在0-120℃下用碱如M +或M2 +,氨或胺的氢氧化物和氯化物中和共聚物而获得的。 上述共聚物和共聚物的重均分子量为10000-30000。 水泥组合物含有0.01-10pts.wt。 的水泥外加剂,基于100pts.wt。 的水泥。
    • 37. 发明授权
    • 시멘트 혼화제 및 시멘트 조성물
    • 시멘트혼화제및시멘트조성물
    • KR100376366B1
    • 2003-03-17
    • KR1019990001747
    • 1999-01-21
    • 가부시기가이샤 닛뽕쇼꾸바이
    • 야마시타아키히코히라타츠요시유아사츠토무니와히로카주
    • C04B26/06
    • C04B24/2647C04B24/2694C04B40/0039C04B2103/308C08F220/28
    • The present invention provides a cement admixture and a cement composition, both of which displays little dependence of the water-reducibility upon temperature in that these cement admixture and cement composition involve little slump loss at high temperature and little increase in the amount of addition at low temperature. The cement admixture comprises either or both of the following components: copolymer (A) which includes constitutional unit (I) of general formula (1) below and constitutional unit (II) of general formula (2) below as essential constitutional units and may further include constitutional unit (III) of general formula (3) below, wherein the content of constitutional unit (III) is 45 weight % or less of copolymer (A); and copolymer salt (B) which is obtained by further neutralizing copolymer (A) with an alkaline substance.
    • 本发明提供了一种水泥掺合料和一种水泥组合物,这两种水泥掺合料和水泥组合物都显示出水还原性对温度的依赖性很小,因为这些水泥掺合料和水泥组合物在高温下几乎没有坍落度损失并且在低温下的添加量几乎没有增加 温度。 该水泥混合物含有以下成分中的一种或两种:包含下面通式(1)的结构单元(I)和下面通式(2)的结构单元(II)作为基本结构单元的共聚物(A) 包含以下通式(3)的结构单元(III),其中结构单元(III)的含量为共聚物(A)的45重量%或更少; 和通过用碱性物质进一步中和共聚物(A)而得到的共聚物盐(B)。 < CHEM>